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This primary didn't have any GOP presidential candidates on the ballot, as voters chose Donald Trump during a special caucus in March.

But voters will chose a Democratic candidate for president, as well as the U.S. 6th Congressional District candidates, several state House and Senate candidates and vote on commission races in Newport and Covington.

Democrats have controlled the House for nearly a century, and the chamber is the party's last line of defense against Republicans looking to consolidate political power in Kentucky. Republicans are in solid control of the Kentucky Senate.

The Kentucky House is the last legislative chamber in the South still held by Democrats.Democrats hold a 53-47 advantage in the House after winning three of four special elections in March. All 100 seats up are for election in November.

The Attorney General's Office said it had received 11 calls from eight counties by 10 a.m. A majority of the calls were procedural questions, but three were reports of electioneering and one reported possible vote buying.